Shoemaker&#39;s jack.



Patented Aug. 22, I899.

No. 631.,5l9.

' A. R. COOPER.

SHOEMAKEBS JACK.

(Application filed June 8, 1898.)

-(No Model.)

UNITED STATES ALBERT R. COOPER,

PATENT OFFICE.

OF FINDLAY, OHIO.

SHOEMAKERS JACK-.

SPECIFICATION forming part of Letters Patent No. 631,519, dated August 22, 1899.

Application filed June 6, 1898. Serial No. 682,630. (No model.) i

To all whom it may concern:

Be it known that I, ALBERT R. COOPER, a citizen of the United States, residing at Findlay, in the county of Hancock and State of Ohio, have invented new and useful Improvements in Shoemakers Jacks, of which the fol lowing is a specification.

My invention relates to shoemakers jacks for supporting a last and which may be adjusted vertically according as circumstances may require and which is also rotatable, so as to bring the last into any position required.

The invention consists in the novel construction and combination of parts hereinafter fully described and claimed.

In the accompanying drawings, Figure 1 is a perspective view of a shoemakers jack constructed according to my invention. Fig. 2 is a sectional view of the same. Fig. 3 is a bottom view of a last adapted to be used in connection with the jack.

In the said drawings the reference-numeral 1 designates the base of the apparatus, provided with a hollow standard 2, which is rotatable thereon and formed near the upper ends with lugs 3, to which is pivoted a springactuated lever 4.. Fitting in said standard is a vertically-movable rectangular bar 5, formed intermediate its ends with a number of rackteeth 5, with which said lever is adapted to engage, so as to hold said bar at any position to which it may be adjusted. This bar at its upper end is formed with a shoulder 6, which rests upon the standard when lowered. This is particularly advantageous when iron lasts are used which are subjected to considerable hammering, as the strain is taken off the lever. Connected with the upper end of said bar by means of a pin 7 is a horizontally-extending arm 8, provided at its outer end with a thumb-screw 9. The pin 7 extends up above the said arm and is adapted to engage with a recess in a last. The lower end of this pin is secured to the bar 5 and has secured thereto an angular block 7 which passes through a corresponding aperture in the arm 8, so that as the latter is; turned the bar 5 and standard will also be turned. 7

Thefnumeral 12 designates the usual strap,

adapted to hold the last on the arm 8, the lower end of which is provided with a ring 13, which engages with a lever 14:, pivoted to a bar 15, secured to one side of the base. At the opposite side said base is provided with a rack-bar 16, with which said lever is adapted to engage to hold it in place. A spring 17 is connected with said lever and base.

The last 10, as seen in Fig. 3, is formed with a rectangular recess 18, through which the pin 7 passes, and is also formed on its under side with a longitudinal rib 19, which serves to strengthen the same and enable it to withstand the hammering to which lasts are usually subjected without injury.

From the above it will be seen that the last may be adjusted vertically as desired and can also be rotated so as to bring it into any position thedemands of the work may require.

The lasts shown in Figs. 1 and 2 are ordinary wooden lap-lasts, while the last in Fig. 3 is an iron one. In the latter case the hole which receives the pin is preferably rectangular and the pin correspondingly formed.

Having thus fully described my invention, what I claim is- 1. In a shoemakers jack, the combination with the base, the rotatable tubular standard and the spring-actuated lever, of the verti- 'cally-movable rack-bar located in said standard having a shoulder at the upper end, the 80 arm connected with said rack-bar having a set-screw at the outer end and the pin adapted to engage with a last, substantially as de-. scribed.

2. The combination with the base, the ro- 5 tat-able tubular standard, the lugs and the spring-actuated lever, of the vertically-mow able rack-bar, the arm connected with the upper end thereof, the set-screw, the pin, the lever pivoted to the base, the ring, the strap and the rack-bar, substantially as described.

In testimony whereof I have hereunto set my hand in presence of two subscribing'wit nesses.

ALBERT R. COOPER.

Witnesses:

L. A. CARABIN, W. V. CooNs. 

